be dead to the world
to be sleeping:
"Is Georgie up yet?" "I doubt it - she was dead to the world ten minutes ago."
Thesaurus: synonyms and related words
Animal physiology: sleep & sleeping
- beauty
- bed
- bunk
- bye-byes
- catnap
- conk
- dead
- delayed sleep phase pattern
- disco nap
- kip
- sleep over
- sleeper
- sleepyhead
- slept
- sound
- soundly
- tuck
- tuck sb in
- turn
- turn in
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